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# frozen_string_literal: true
module Doorkeeper
module Models
module ExpirationTimeSqlMath
extend ::ActiveSupport::Concern
class ExpirationTimeSqlGenerator
attr_reader :model
delegate :table_name, to: :@model
def initialize(model)
@model = model
end
def generate_sql
raise "`generate_sql` should be overridden for a #{self.class.name}!"
end
end
class MySqlExpirationTimeSqlGenerator < ExpirationTimeSqlGenerator
def generate_sql
Arel.sql("DATE_ADD(#{table_name}.created_at, INTERVAL #{table_name}.expires_in SECOND)")
end
end
class SqlLiteExpirationTimeSqlGenerator < ExpirationTimeSqlGenerator
def generate_sql
Arel.sql("DATETIME(#{table_name}.created_at, '+' || #{table_name}.expires_in || ' SECONDS')")
end
end
class SqlServerExpirationTimeSqlGenerator < ExpirationTimeSqlGenerator
def generate_sql
Arel.sql("DATEADD(second, #{table_name}.expires_in, #{table_name}.created_at) AT TIME ZONE 'UTC'")
end
end
class OracleExpirationTimeSqlGenerator < ExpirationTimeSqlGenerator
def generate_sql
Arel.sql("#{table_name}.created_at + INTERVAL to_char(#{table_name}.expires_in) second")
end
end
class PostgresExpirationTimeSqlGenerator < ExpirationTimeSqlGenerator
def generate_sql
Arel.sql("#{table_name}.created_at + #{table_name}.expires_in * INTERVAL '1 SECOND'")
end
end
ADAPTERS_MAPPING = {
"sqlite" => SqlLiteExpirationTimeSqlGenerator,
"sqlite3" => SqlLiteExpirationTimeSqlGenerator,
"postgis" => PostgresExpirationTimeSqlGenerator,
"postgresql" => PostgresExpirationTimeSqlGenerator,
"mysql" => MySqlExpirationTimeSqlGenerator,
"mysql2" => MySqlExpirationTimeSqlGenerator,
"trilogy" => MySqlExpirationTimeSqlGenerator,
"sqlserver" => SqlServerExpirationTimeSqlGenerator,
"oracleenhanced" => OracleExpirationTimeSqlGenerator,
}.freeze
module ClassMethods
def supports_expiration_time_math?
ADAPTERS_MAPPING.key?(adapter_name.downcase) ||
respond_to?(:custom_expiration_time_sql)
end
def expiration_time_sql
if respond_to?(:custom_expiration_time_sql)
custom_expiration_time_sql
else
expiration_time_sql_expression
end
end
def expiration_time_sql_expression
ADAPTERS_MAPPING.fetch(adapter_name.downcase).new(self).generate_sql
end
def adapter_name
ActiveRecord::Base.connection.adapter_name
end
end
end
end
end
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